关键词: 装配端口, 语义推理, 匹配算法, 智能装配, 几何约束, 产品设计

Abstract: To promote the assembly intelligence and automation for complex structure products, an intelligent assembly technology based on automatic port matching was proposed. The high-level abstract representation of mate constraints among components was constructed by defining assembly ports and constraint relationships. The datum triangle was extracted based on feature layout graph of each port. The assembly capability between two ports was evaluated rapidly by using port matching algorithm. Through semantic inference, the mate operation constraints set between two matching ports were created automatically. The homogeneous transformation matrix was computed by three dimensional geometric constraint solving engine, thereby the automatic assembly was realized. Prototype system of intelligent assembly was developed and an assembly example of a complex structure product was tested on this system. The practice indicated this method could reduce the interactive operations effectively, and improve the assembly speed.

Key words: assembly port, semantic inference, matching algorithm, intelligent assembly, geometric constraint, product design